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Old Nov 23, 2015, 11:44 AM
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Quote:
Originally Posted by ditonics View Post
Just checked my brakes for you.
Closed - locked with no play
Open - held open by linkage - not an actual lock as such - no play
Mid position - about 5-8mm of vertical play - wouldn't even cross my mind to worry about it
Thanks for that. Normally that amount of play would worry me, especially if it was taken up by one brake and not the other.

But having read up a bit more on the subject, the lift generated by the upper wing surface will tend to push the brakes (once they are 'unlocked') as far open as any play in the mechanism will allow. So, as long as the linkages are exactly the same on each wing, there is unlikely to be any imbalance in practice.

Blimey, I think I answered my own question!
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Old Mar 11, 2016, 10:35 AM
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Alpina action in nice springish weather, light winds
Enjoy!

Alpina (6 min 53 sec)
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Old Mar 11, 2016, 11:00 AM
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Couldn't help but notice that during the flight your stab moves very little if at all and it seems you are controlling pitch mostly with wing camber. Is this correct?
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Old Mar 11, 2016, 11:35 AM
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Any tips on holding the stab stable, mine is prone to moving apart.

PS: love the touch and go off the cliff
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Old Mar 11, 2016, 12:26 PM
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Quote:
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Any tips on holding the stab stable, mine is prone to moving apart.

PS: love the touch and go off the cliff
Some guys will apply a little contact cement to the acuation rod or a very slight bend to the same rod to introduce a little tension.
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Old Mar 11, 2016, 12:35 PM
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Mine is banana shape and it still comes loose, tried a smear of CA to build up the diameter and still comes away

Has anyone come up with a simple method to mechanically fix it in place
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Old Mar 11, 2016, 12:59 PM
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Mine is banana shape and it still comes loose, tried a smear of CA to build up the diameter and still comes away

Has anyone come up with a simple method to mechanically fix it in place
A little masking tape wound around the rod works ok - it very slightly increases the diameter.
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Old Mar 11, 2016, 01:24 PM
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@exf3bguy, no what you can see is the ailerons moving as i adjust for the weight of the mobius on the wingtip. She requires very little input to correct in smooth air on the stab.
@ditronics, mine has 2 little red push fasteners that secure the tab to the tail. If mine didnt have them i would bend the steel rods inward slightly. haha on the touch and go, the alpina is good as them, as it never wants to land lol
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Old Mar 11, 2016, 01:51 PM
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@ Ditonics - I did a slight bend of pins away from each other and used a little bit of bees wax (utility wax) on the pins as well.

@ Jimbo - Yours is the CME?
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Old Mar 11, 2016, 02:00 PM
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@exf3bguy, no what you can see is the ailerons moving as i adjust for the weight of the mobius on the wingtip. She requires very little input to correct in smooth air on the stab.
@ditronics, mine has 2 little red push fasteners that secure the tab to the tail. If mine didnt have them i would bend the steel rods inward slightly. haha on the touch and go, the alpina is good as them, as it never wants to land lol
Some pictures of the magic red fasteners would be great
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Old Mar 11, 2016, 02:22 PM
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If you were adamant about doing it, I suppose you could rig up your own somehow, maybe wheel collars would work.
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Old Mar 11, 2016, 07:54 PM
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Jimbo , Thank You , really Thank You!

Earl
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Old Mar 11, 2016, 08:17 PM
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Quote:
Originally Posted by ditonics View Post
Any tips on holding the stab stable, mine is prone to moving apart.
I secured both metal pins for the stab by tacking one end into the right half with a touch of thin CA glue (to keep from misplacing them). I added a slight bow into remaining pin length in opposing directions to "bind" them a little when fitted into the left half. I can still pull them apart with a little tug when disassembling the tail. If I need to remove the embedded ends of the pins for replacement or whatever, a firm twist with a pliers will break the brittle CA bond. Works fine for me. No more spread. No more lost pins.
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Old Mar 11, 2016, 08:20 PM
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Oh, and beautiful video, as usual. Just the right mix of on-board and shore-view!
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Old Mar 12, 2016, 03:35 AM
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@bob, yes mine is the cme.
@DITRONICS, will get it out the bags this weekend and take a pic
@Mike @Earl thanks!
Ive also found that some UHU por smeared on the steel and left to dry before inserting into the stab gives a little tackiness to the rods, its called welders over the pond.
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